BigTreeTech TFT35-E3 V3.0
3.5-inch dual-mode display designed as a direct replacement for the Ender 3 stock LCD. STM32 based with touchscreen TFT and 12864 emulation modes, supports SD and USB printing.
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Specifications
Components
STMicroelectronics STM32F207VCT6 32-bit ARM Cortex-M3 microcontroller at 120MHz
Bus Interfaces
The BigTreeTech TFT35-E3 V3.0 is a 3.5-inch dual-mode display specifically designed to replace the original LCD screen on Creality Ender 3 printers and similar machines. It is powered by an STM32F207VCT6 ARM Cortex-M3 at 120MHz and offers two selectable operating modes: a full-color TFT touchscreen mode using RS232 serial, and a 12864 LCD emulation mode without touch.
In touchscreen mode, users gain a modern interface for temperature control, SD card/USB flash drive printing, and print management. In 12864 mode, it behaves identically to the stock Ender 3 display. The board includes EXP1, EXP2, and EXP3 connectors — the EXP3 port is specifically tailored for SKR MINI E3 V1.2 and SKR E3 DIP V1.1, enabling zero-rework installation. Reserved ports for filament detection (FIL-DET) and automatic power-off (PS-ON) are also present, along with a WiFi module header for optional wireless connectivity.
The board dimensions are 93x87mm, matching the Ender 3 original screen footprint for easy retrofitting. Firmware updates are applied via microSD card. Full schematics and firmware source are open-source on GitHub.
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